{"product_id":"bola-ult-50r-700c-carbon-disc-wheelset-50mm-21-24mm-inner-tubeless-ready-1250g","title":"Bola ULT 50R 700C Carbon Disc Wheelset – 50mm, 21\/24mm Inner, Tubeless Ready, 1250g","description":"\u003cp\u003eThe Bola ULT 50R 700C Carbon Disc Wheelset offers 50mm depth and 21mm or 24mm internal width options, delivering aerodynamic efficiency and versatile fit for both road and gravel riding. Engineered with T800 unidirectional matte carbon fiber rim, Sapim CX-Ray spokes, and BL100 hub with TPI ceramic bearings, this 1250g tubeless-ready set prioritizes rapid acceleration, reduced fatigue, and durable performance confirmed by ISO 4210-7 certification.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Depth:\u003c\/strong\u003e 50mm mid-profile for aerodynamic stability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Width:\u003c\/strong\u003e Internal 21mm or 24mm; External 28mm or 30mm — ideal for 28-48mm tires\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1250g per set (without tape\/valves)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpoke Count:\u003c\/strong\u003e 24 (front \u0026amp; rear), 2-cross lacing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHub:\u003c\/strong\u003e Aluminum BL100, TPI ceramic bearings, 54T ratchet, Center Lock disc, 12x100mm\/12x142mm thru-axle or QR compatible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpokes:\u003c\/strong\u003e Sapim CX-Ray, stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e T800 UD matte carbon rim\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e ISO 4210-7, REACH-compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eUse Case Comparison\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid #ccc;\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ccc;\"\u003eBola ULT 50R\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ccc;\"\u003eTypical Alloy Wheelset\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ccc;\"\u003eCompetitor Carbon 50mm\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc;\"\u003eWeight (set)\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc;\"\u003e1250g\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc;\"\u003e1550-1800g\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc;\"\u003e1200-1350g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc;\"\u003eRim Width (Int\/Ext)\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc;\"\u003e21\/24mm \/ 28\/30mm\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc;\"\u003e17-19mm \/ 23-25mm\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc;\"\u003e21-25mm \/ 28-31mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc;\"\u003eTubeless Ready\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc;\"\u003eYes\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc;\"\u003eRare\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ccc;\"\u003eAxle Compatibility\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc;\"\u003e12x100\/12x142\/QR\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc;\"\u003eQuick release\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc;\"\u003e12x100\/12x142\/QR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eReal-World Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e50mm depth boosts aerodynamic efficiency for sustained speed in races and group rides.\u003c\/li\u003e\n\u003cli\u003e21mm\/24mm internal width accommodates 28-48mm tires — ideal for road racing and gravel versatility.\u003c\/li\u003e\n\u003cli\u003e1250g total weight ranks among the lightest, reducing climbing fatigue and improving acceleration.\u003c\/li\u003e\n\u003cli\u003eCeramic bearing hubs minimize drag and enhance durability under high-watt outputs.\u003c\/li\u003e\n\u003cli\u003eTubeless-ready design enables lower pressures for better grip and fewer punctures on rough roads.\u003c\/li\u003e\n\u003cli\u003eISO 4210-7 and REACH compliance ensure safety and material sustainability standards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails class=\"gfai-product-faq\" open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003eAre 50mm carbon disc wheels suitable for both road racing and gravel rides?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes, Bola ULT 50R is engineered for multi-surface use. The 50mm profile balances aerodynamic benefit on road with tubeless, wide rim compatibility for gravel traction.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat benefits do tubeless ultralight carbon wheelsets offer for competitions?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eTubeless-ready carbon wheelsets like Bola ULT 50R reduce rolling resistance, allow lower tire pressures, and decrease puncture risk, improving performance and comfort during endurance or race conditions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003eHow does a 1250g 700C wheelset compare to other lightweight options?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eAt 1250g, Bola ULT 50R is comparable to elite carbon wheelsets. Lighter wheels accelerate quicker and reduce rider fatigue, verified in race data and peer review studies.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003eShould I choose 28mm or 30mm external rim width for 28-48mm tires?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003e28mm is optimal for 28-32mm tires with lower drag; 30mm offers more sidewall support for 35-48mm and gravel setups. Your choice should match primary tire width and terrain focus.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat makes Bola ULT 50R a good wheelset for reducing fatigue and improving acceleration?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThe light T800 carbon construction, Sapim CX-Ray spokes, and ceramic bearings combine to minimize rotational mass and rolling friction, supporting sustained, fast accelerations and reducing end-ride leg fatigue.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cp\u003e\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"Bola ULT 50R 700C Disc Carbon Road Wheelset – 50mm,28\/30mm Wide,Tubeless Ultralight\",\n  \"description\": \"The Bola ULT 50R 700C Carbon Disc Wheelset offers 50mm depth and 21mm or 24mm internal width options, delivering aerodynamic efficiency and versatile fit for both road and gravel riding. Engineered with T800 unidirectional matte carbon fiber rim, Sapim CX-Ray spokes, and BL180 hub with TPI ceramic bearings, this 1250g tubeless-ready set prioritizes rapid acceleration, reduced fatigue, and durable performance confirmed by ISO 4210-7 certification. Technical Specifications Rim Depth: 50mm mid-profile for aerodynamic stability Rim Width: Internal 21mm or 24mm; External 28mm or 30mm — ideal for 28-48mm tires Weight: 1250g per set (without tape\/valves) Spoke Count: 24 (front \u0026 rear), 2-cross lacing Hub: Aluminum BL180, TPI ceramic bearings, 54T ratchet, Center Lock disc, 12x100mm\/12x142mm thru-axle or QR compatible Spokes: Sapim CX-Ray, stainless steel Material: T800 UD matte carbon rim Certification: ISO 4210-7, REACH-compliant Use Case Comparison Feature Bola ULT 50R Typical Alloy Wheelset Competitor Carbon 50mm Weight (set) 1250g 1550-1800g 1200-1350g Rim Width (Int\/Ext) 21\/24mm \/ 28\/30mm 17-19mm \/ 23-25mm 21-25mm \/ 28-31mm Tubeless Ready Yes Rare Yes Axle Compatibility 12x100\/12x142\/QR Quick release 12x100\/12x142\/QR Real-World Benefits 50mm depth boosts aerodynamic efficiency for sustained speed in races and group rides. 21mm\/24mm internal width accommodates 28-48mm tires — ideal for road racing and gravel versatility. 1250g total weight ranks among the lightest, reducing climbing fatigue and improving acceleration. Ceramic bearing hubs minimize drag and enhance durability under high-watt outputs. Tubeless-ready design enables lower pressures for better grip and fewer punctures on rough roads. ISO 4210-7 and REACH compliance ensure safety and material sustainability standards. Frequently Asked Questions Are 50mm carbon disc wheels suitable for both road racing and gravel rides? Yes, Bola ULT 50R is engineered for multi-surface use. The 50mm profile balances aerodynamic benefit on road with tubeless, wide rim compatibility for gravel traction. What benefits do tubeless ultralight carbon wheelsets offer for competitions? Tubeless-ready carbon wheelsets like Bola ULT 50R reduce rolling resistance, allow lower tire pressures, and decrease puncture risk, improving performance and comfort during endurance or race conditions. How does a 1250g 700C wheelset compare to other lightweight options? At 1250g, Bola ULT 50R is comparable to elite carbon wheelsets. Lighter wheels accelerate quicker and reduce rider fatigue, verified in race data and peer review studies. Should I choose 28mm or 30mm external rim width for 28-48mm tires? 28mm is optimal for 28-32mm tires with lower drag; 30mm offers more sidewall support for 35-48mm and gravel setups. Your choice should match primary tire width and terrain focus. What makes Bola ULT 50R a good wheelset for reducing fatigue and improving acceleration? The light T800 carbon construction, Sapim CX-Ray spokes, and ceramic bearings combine to minimize rotational mass and rolling friction, supporting sustained, fast accelerations and reducing end-ride leg fatigue.\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Carbon Fiber Sporting Goods\"\n  },\n  \"category\": \"Carbon Disc Road \u0026 Gravel Wheelsets\",\n  \"image\": [\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/50white_11a8218b-14f2-49df-b80b-77f03da42fbf.png?v=1779866653\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/black45db.png?v=1779866653\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/1423_482234ca-c5b5-4e8e-bd16-69e69478ab7f.png?v=1779848686\"\n  ],\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"availability\": \"https:\/\/schema.org\/OutOfStock\",\n    \"price\": \"698.00\",\n    \"priceCurrency\": \"USD\",\n    \"url\": \"https:\/\/bolacarbon.com\/products\/bola-ult-50r-700c-disc-carbon-road-wheelset-50mm-28-30mm-wide-tubeless-ultralight\",\n    \"seller\": {\n      \"@type\": \"Organization\",\n      \"name\": \"https:\/\/bolacarbon.com\"\n    }\n  }\n}\n\u003c\/script\u003e \u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are 50mm carbon disc wheels suitable for both road racing and gravel rides?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, Bola ULT 50R is engineered for multi-surface use. The 50mm profile balances aerodynamic benefit on road with tubeless, wide rim compatibility for gravel traction.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What benefits do tubeless ultralight carbon wheelsets offer for competitions?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Tubeless-ready carbon wheelsets like Bola ULT 50R reduce rolling resistance, allow lower tire pressures, and decrease puncture risk, improving performance and comfort during endurance or race conditions.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How does a 1250g 700C wheelset compare to other lightweight options?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"At 1250g, Bola ULT 50R is comparable to elite carbon wheelsets. Lighter wheels accelerate quicker and reduce rider fatigue, verified in race data and peer review studies.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Should I choose 28mm or 30mm external rim width for 28-48mm tires?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"28mm is optimal for 28-32mm tires with lower drag; 30mm offers more sidewall support for 35-48mm and gravel setups. 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